package net.zjitc.servlet;

import javax.servlet.*;
import java.io.IOException;
import java.io.PrintWriter;

/**
 * Created by Administrator on 2017/9/21.
 */

/*实现Servlet接口*/
//aservlet
public class AServlet implements Servlet {

    //第一步：定义一个成员变量servletConfig，所有方法都可以使用
    private ServletConfig servletConfig = null;

    /**
     * 默认第一次访问的时候出生
     * @param servletConfig
     * @throws ServletException
     */
    @Override
    public void init(ServletConfig servletConfig) throws ServletException {
       //第二步：初始化时赋值servletConfig
        this.servletConfig = servletConfig;
        System.out.println("出生了");
    }

    @Override
    public ServletConfig getServletConfig() {
        return null;
    }

    /**
     * 每次有请求，都由此方法处理
     * @param servletRequest
     * @param servletResponse
     * @throws ServletException
     * @throws IOException
     */
    @Override
    public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
       //第三步：读取servletConfig相关信息,输出到页面
       String value = this.servletConfig.getInitParameter("Ecoding");
        PrintWriter out = servletResponse.getWriter();
        out.write("aServlet ......<br>");
       /* out.write("<h1>"+value+"</h1> </br>");
        System.out.println("haha");*/

       ServletContext context = this.servletConfig.getServletContext();
       context.setAttribute("name","zhangsan");
    }

    @Override
    public String getServletInfo() {
        return null;
    }

    @Override
    public void destroy() {
        System.out.println("死了。。。");
    }
}
